The Boston Celtics’ season-opening game last season was the most-anticipated of the lidlifters across the NBA — Kyrie Irving playing his first game as a Celtic and at and against his former team, the Cleveland Cavaliers, and more specifically, LeBron James.

It’s a new year and a new set of circumstances as Boston will tip off this season Tuesday night against the Philadelphia 76ers at TD Garden (8, TNT).

While the Celtics KO’d the 76ers in five games in the second round of the NBA playoffs last spring, the season-opening clash against Philadelphia doesn’t carry nearly as much sizzle as the one played a year ago, something Boston’s Jayson Tatum admits.